DOS water tank is #1 tank manufacturer in Thailand.



Business leader
Business leader in water and environmental management


Design and development of water production systems And wastewater treatment systems With a professional team efficiently.

Policy to develop response Needs for the highest customer


Covering wastewater treatment Household water storage And industry Including various environmental businesses.

Design and installation of international standard products


With technical expertise, system rules, components with instructions and manuals by specialized specialists.


Guarantee product
Guarantee product, work with quality service


Take care and pay attention to customers as well Warranty scope Covering and responsible for the highest customer.


DOS - Water Tank Products


DOS - Septic Tank Products


DOS - Grease Trap Products

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